Control for short cut multiplication



Oct. 19, 1965 H. J. CHALL ETAL CONTROL FOR SHORT CUT MULTIPLICATION 25 Sheets-Sheet l Filed Nov. 27 1961 Oct. 19, 1965 H. J. cHALl. ETAL 3,212,705

CONTROL FOR SHORT CUT MULTIPLICATION Filed Nov. 27, 1961 25 Sheets-Sheet 2 FIEu-l;

Oct. 19, 1965 H. J. CHALL ETAL CONTROL FOR SHORT CUT MULTIPLIGATION 25 Sheets-Sheet 3 Filed NOV. 27 1961 Oct. 19, 1965 H. J. CHALL ETAL CONTROL FOR SHORT GUT MULTIPLICATION 23 Sheets-Sheet 4 Filed NOV. 27, 1961 Oct. 19, 1965 H. J. CHALL ETAL 3,212,705

CONTROL FOR SHORT CUT MULTIPLIGATION Filed Nov. 27, 1961 25 Sheets-Sheet 5 Oct. 19, 1965 H. J. CHALI. ETAL 3,212,705

CONTROL FOR SHORT CUT MULTIPLICATION Filed NOV, 27 1961 25 Sheets-Sheet 6 Oct. 19, 1965 H. J. cHALl. ETAL 3,212,705

CONTROL FOR SHORT CUT MULTIPLICATION Filed NOV. 27, 1961 25 Sheets-Sheet 7 Ir-IlE- l1 Oct. 19, 1965 H. J. CHALL ETAL.

CONTROL FOR SHORT CUT MULTIPLICATION Filed Nov. 27. 1961 23 Sheets-Sheet 8 FII-E l-".

Oct. 19, 1965 H. J. CHALL ETAL 3,212,705

CONTROL FOR SHORT CUT MULTIPLIGATION Filed NOV. 27, 1961 23 Sheets-Sheet 9 Oct. 19, 1965 H. J. CHALL ETAL 3,212,705

CONTROL FOR SHORT CUT MULTIPLICATION Filed Nov. 27. 1961 25 Sheets-Sheet 10 PIE-*1? Oct. 19, 1965 H. J. cHALL ETAL.

CONTROL FOR SHORT CUT MULTIPLICATION 25 Sheets-Shes?l 11 Filed NOV. 27 1961 nH-miillM-Hhiw mdwlllm-HMH Oct 19, 1965 H. .1. cHALL ETAL CONTROL FOR SHORT CUT MULTIPLICATION 25 Sheets-Sheet 12 Filed Nov. 27, 1961 Oct. 19, 1965 H. J. cHALl. ETAL CONTROL FOR SHORT CUT MULTIPLICATION 25 Sheets-Sheet 13 Filed Nov. 27. 1961 lmmllllww-H@ u-WmlllM-Hlli.:

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lmllmImuH-HMH Oct. 19, 1965 H. J. cHALL ETAL CONTROL FOR SHORT CUT MULTIPLICATION 23 Sheets-Sheet 19 Filed NOV. 27 1961 Oct. 19, 1965 H. J. CHALL ETAL CONTROL FOR SHORT CUT MULTIPLICATION 23 Sheets-Sheet 2O Filed Nov. 27 1961 

1. IN COMBINATION IN A CALCULATING MACHINE, A REGISTER HAVING A DIFFERENTIALLY SETTABLE ELEMENT WHICH HAS TWO SERIES OF STEPS, A SENSOR, AND MEANS FOR MOVING THE SENSOR INTO ENGAGEMENT WITH SAID DIFFERENTLY SETTABLE ELEMENT FOR SENSING ITS SETTING, SAID SENSOR INCLUDING A FOLLOWING PROBE HAVING TWO SHOULDERS, EACH ARRANGED TO ABUT A SEPARATE ONE OF SAID SERIES OF STEPS FOR LIMITING THE MOVEMENT OF SAID SENSOR, SAID SENSOR INCLUDING ALSO A SEPARATE ADVANCE PROBE SHIFTABLE BETWEEN TWO POSITIONS, SAID ADVANCE PROBE, IN ONE OF SAID TWO POSITIONS, LYING IN ADVANCE OF ONE OF SAID SHOULDERS FOR PERMITTING SAID OTHER SHOULDER TO 